When James Oliver Barnett was born on 20 November 1875, in North Cayuga, Haldimand, Ontario, Canada, his father, George Oliver Barnett, was 40 and his mother, Esther Hetherington, was 30. He married Ida Smith on 6 October 1902, in St. Catharines, Lincoln, Ontario, Canada. He lived in Cayuga, Haldimand, Ontario, Canada for about 10 years and Haldimand, Ontario, Canada in 1901. He died on 13 December 1943, in St. Catharines, Niagara, Ontario, Canada, at the age of 68, and was buried in St. Catharines, Niagara, Ontario, Canada.
English: habitational name from various places, for example Chipping (High) Barnet, East Barnet, and Friern Barnet in Greater London, named with Old English bærnet ‘place cleared by burning’ (a derivative of bærnan ‘to burn, to set light to’).
English (of Norman origin): from a medieval personal name, a variant of Bernard .
Jewish (Ashkenazic): this surname has been adopted by Ashkenazic Jews in the English-speaking world, perhaps as an Anglicized form of a vaguely similar Jewish name such as Baruch .